HELP, this aint no bolt action rifle!

[doninva]

Trying to put a 3X9X40 Leupold on my DPMS AR. Always try to get scope as low as possible on my bolt action rifles but that's not going to work on my AR . Had a set of low , extra low and what looks like medium but could be low ones. My scope needs to be higher. Will I need medium Burris signature zee rings or high. Thanks, Don

[jmayton]

The general rule for flat-top AR's is extra high rings.  I like Warne's myself.  It seems a bit weird coming from a bolt gun, but it works just fine.  Extra-high rings put your scope at the standard sight height of an AR.  If you have a front sight, it generally puts the front post near the center of the scope, not always, but close.  At low magnification (below 3x) you will probably see your sight, but it doesn't get in the way.  At higher magnification, the scope "looks around" the front sight.  You may be able to get by with high rings depending on your set up, but I've never been able to get anything shorter than that to work.


Another issue is eye relief.  Most scopes will not mount forward enough with standard rings.  The eyepiece of the scope should sit just above or slightly in front of the back of the charging handle, depending on your cheek weld.  That's why you see so many cantilevered one-piece AR scope mounts.  Check out the ones like the Burris P.E.P.R..  Leupold, Nikon, and AR Stoner all make ones similar.  For a rock-solid mount check out Nightforce or American Defense.

[bcraig]

Trying to put a 3X9X40 Leupold on my DPMS AR. Always try to get scope as low as possible on my bolt action rifles but that's not going to work on my AR . Had a set of low , extra low and what looks like medium but could be low ones. My scope needs to be higher. Will I need medium Burris signature zee rings or high. Thanks, Don

I have tried several Pair,Weaver High Quads (Wal-Mart )will work for me but just barely as cheek weld is very tight.
Weaver extra high Quads better as not Jammed into cheek,See through Weavers work well as do Leupold see throughs.,the Leupolds are a little higher.
Craig
By the way ,as long as you can grab the charging handle and pull it back to use you dont have to worry about it being forward of the end of the handle. Put the scope where you want to as long as it wont contact your eye when the stock is as far forward as you will have it when shooting SO IT WONT DOT YOUR EYE.

[doninva]

Thanks guys, this has been a learning experience. I finally figured out how to remove my hand guard, have a quad rail coming. Got the delta ring turned after I took the gas tube out, not going to do that again. Ordered a cantilever mount, want to get the Leupold far enough forward to not dot the eye . Really don't like the rattle in the butt stock but not sure how to address that. Thanks again for the help, Don

[jmayton]

I'm guessing you have a collapsible buttstock.  That being the case it will rattle.  I put a Magpul MOE on mine and it's better.  The CTR is better still.  Above that you get into significant $$$.  Measure the diameter of your buffer tube to get the right stock.  There is Mil-spec (1.14") and commercial (1.17").  Carbines generally do not have a lot of buffer spring noise, but there is a lot more going on with each shot and that takes a bit of getting used to.  I don't notice it anymore, but do notice the significant amount of silence and lack of movement in my bolt guns now.

[SharonAnne]

my A1 and A2 stocks do not rattle but I sure do get get that screen-door 'sproing' when I shoot. Nothing for that. I do believe it is just the way of the beast.

[ole 5 hole group]

Haaa, now that you have a little skin in the game, we'll see how fast it'll cost you an arm & a leg.
For a 40mm to a 56mm you'll probably want a 1-piece scope mount that is labeled Xtra-high, as jmayton advised.
http://www.opticsplanet.com/dnz-products-freedom-reaper-5-66-picatinny-rail-1-mount-with-20moa.html
 
For a red-dot like the Aimpoint among others you'll need what is called a raiser.  http://www.dpmsinc.com/ADM-Aimpoint-T1-Riser-Cowitness_p_2273.html
 
For the one piece scope mount I went with the DNZ and it's fine for me, as I only do load development with a scope and long range shooting at small targets, such as prairie dogs.  Some like the QD mounts from various manufacturers but they are a little more expensive but they are quick and handy and need no tools.  There's plenty of models out there to choose from.
 
 
 
 
 

[doninva]

ole 5 hole group, It has already started. Just yesterday I ordered a cantilever scope mount, quad rail, sling mount, to go on rail, 20 round magazine, springs for my trigger. Will probably order a couple more mags and some bullets when I find them. I am sure I need some more stuff bot haven't realized just what yet . Don

[doninva]

Just ordered a brass catcher, vise block and a delta ring tool. Does this ever end . Don

[SharonAnne]

doniva, it does not end.  I look at all the tools I have purchased for my ARs and I think, 'hey, I need a ....'. And the beat goes on.

[JonnyReb]

my A1 and A2 stocks do not rattle but I sure do get get that screen-door 'sproing' when I shoot. Nothing for that. I do believe it is just the way of the beast.

  I bought some kinda AR back in the late 80's or early 90's, paid about 500 out the door at a local gunshop. Rushed home all excited about my new rifle. Went straight out back and loaded up my first 20rd mag. Started shooting and after every shot the stock buzzed and "sproingggg"ed just like your saying . Went inside and called a buddy who had lots of AR time under his belt. Whats the deal with this "Buzz" in the stock i ask? Oh, he says, "They all do that".  I sold the rifle and have never fired one or even paid any attention to one since.

  Just curious, do they really all do that? Still?
                                                                                   Jeff

[ole 5 hole group]

Jeff, My AR's are pretty solid and make no noise but my gas pistol throws the carrier back pretty good when I break the upper, but that's just their nature.  I like the expressions on people's faces, who are use to CI's only, when they pop the upper on a gas piston - it's like what happened? what broke?   

[JonnyReb]

 So a well built AR WON'T buzz like a bumblebee against my cheek? I kinda figured theres NO WAY they all felt like mine did or no one would want one

[SHOOTALL]

Trying to put a 3X9X40 Leupold on my DPMS AR. Always try to get scope as low as possible on my bolt action rifles but that's not going to work on my AR . Had a set of low , extra low and what looks like medium but could be low ones. My scope needs to be higher. Will I need medium Burris signature zee rings or high. Thanks, Don

an easy fix would be to use a riser between your rings and receiver top sometimes high or ex high rings aren't as sturdy as a riser and short rings.     or really good see thru rings to save weight. Make sure the rings are good quality. I like steel and same for riser. Also like 3 screws per side of each ring.

[Lloyd Smale]

i like the burris one piece mounts.

[drdougrx]

I've been using SWFA SSALT one piece mounts on my half dozen or so ARs.  They come as 30mm with 1" inserts for 1" scope tubes.  I also have a Burris PEPR with QD levers...all are excellent. 

[SharonAnne]

the first time I shot an AR15 I looked at the owner and asked what that strange noise was. After a few got over their chuckles I was told they all do it.

JonnyReb, with over 30 years shooting many AR15s I must say, I have never shot one that did not 'sproing'. Yes, it is annoying but the other attributes of the AR15 design far far out weigh the noise.

You can eliminate the noise for just over $130.  The JP Enterprises "Silent Captured Recoil Buffer Spring" assembly won't 'sproing'. I think that is a lot of money for a small annoyance.

I have heard some say to coat the recoil spring in grease. This is a bad idea. The grease will inhibit the proper recoil speed and induce jams. No more than a very light coat of oil for the recoil spring.

You can put a riser on the buttstock that will take your cheek and hearing protection off the stock and keep you away from the noise.

[454Puma]

SharonAnne
Since I run mine wet I don't get the sproing any more!   Atleast where it's noticeable!   When I had my Colt Match target A2  it was noticeable even lubed!